zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/clock2xxx.c b/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/clock2xxx.c
new file mode 100644
index 0000000..1250009
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/clock2xxx.c
@@ -0,0 +1,74 @@
+/*
+ * clock2xxx.c - OMAP2xxx-specific clock integration code
+ *
+ * Copyright (C) 2005-2008 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Contacts:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Paul Walmsley
+ *
+ * Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
+ * Gordon McNutt and RidgeRun, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/cpu.h>
+#include <plat/clock.h>
+
+#include "clock.h"
+#include "clock2xxx.h"
+#include "cm.h"
+#include "cm-regbits-24xx.h"
+
+struct clk *vclk, *sclk, *dclk;
+
+/*
+ * Omap24xx specific clock functions
+ */
+
+/*
+ * Set clocks for bypass mode for reboot to work.
+ */
+void omap2xxx_clk_prepare_for_reboot(void)
+{
+ u32 rate;
+
+ if (vclk == NULL || sclk == NULL)
+ return;
+
+ rate = clk_get_rate(sclk);
+ clk_set_rate(vclk, rate);
+}
+
+/*
+ * Switch the MPU rate if specified on cmdline. We cannot do this
+ * early until cmdline is parsed. XXX This should be removed from the
+ * clock code and handled by the OPP layer code in the near future.
+ */
+static int __init omap2xxx_clk_arch_init(void)
+{
+ int ret;
+
+ if (!cpu_is_omap24xx())
+ return 0;
+
+ ret = omap2_clk_switch_mpurate_at_boot("virt_prcm_set");
+ if (!ret)
+ omap2_clk_print_new_rates("sys_ck", "dpll_ck", "mpu_ck");
+
+ return ret;
+}
+
+arch_initcall(omap2xxx_clk_arch_init);
+
+